Answer:
I'll support Tiffany's comment that “I heard it is created when there are too many nutrients carried in the stormwater.”
Step-by-step explanation:
This is due to large amount of nutrients been carried by storm water into the water as a result of animal and plant farming activities and dumping of nutrients rich waste in and around the bay, the runoff and pollution have many components that help contribute to the algal bloom, which is mainly fed by phosphorus and nitrogen. When alive, the algae prevents sunlight from reaching the bottom of the Bay, when they die and rot, they deoxygenates the Bay's water. This makes it hard for the water's plant and animal live to survive.